Bethania Garage Inc. & Hard Dog Fabrication Hard Dog Fabrication Logo
The M1 Sport


The Sport series of bars were designed for safety and low impact on vehicle utility. Chosen by Mazda NA for their Laguna Seca NB pace car and Mazdaspeed track car prototype. The Sport uses the same main hoop and rear brace structure as our Cage models and meets SCCA Time Trial and NASA HPDE safety requirements when equipped with diagonal bracing.

The M1 Sport fits 1990 - 2005 Miata chassis when fitted with a plastic rear window convertible top. Not compatible with glass rear window soft tops.

None, One, Two or X Brace main hoop diagonal braces and / or an integral harness bar may be added to the No-diagonal, Single and Double Diagonal configurations. A Bolt-In Harness bar is required for harness attachment with the strength optimized X Brace Diagonals.

 Mazda Hard Top compatible with stock latches

Compatible with stock seat belts



  • Not sure which Roll Bar is right for you? Contact Us!

  • Custom formed high density padding is now available for Hard Dog Roll Bars!

Features include:

  • Legal for SCCA Time Trials and NASA HPDE Events when equipped with at least one diagonal brace

  • Allows full seat travel and tilt

  • Fits 1990 - 2005 Miata chassis

  • Full interior height and width; farther to the rear than the hard core allowing better head clearance

  • Single, Double or X Brace Diagonals (X Brace not compatible with an integral harness bar. A Bolt-In Harness Bar is required for harness attachment with the "X")

  • Complete use of Mazda hard top with side latches and all flexible plastic rear window soft tops

  • Available with a durable powdercoat finish or polished stainless steel

  • Constructed of highest quality 1.5" diam x .120" wall drawn over mandrel tubing

  • Laser cut 3/16" mounting plates

  • Complete hardware kit w/ grade 8 bolts and instructions

Roll Bar Accessories:

M1 Sport - SCCA / NASA Compliant - 1990 - 2005 -  Mazda Hard Top and flexible Plastic Window Soft Tops

Contiguous 48 U.S. States Shipping $175.00
Item/Number Description
HS Black Powdercoat
HS1D Black Powdercoat w/ Single Diagonal
HS2D Black Powdercoat w/ Double Diagonal
HSXD Black Powdercoat w/ X Brace Diagonal
H Black Powdercoat Integral Harness Bar - Not compatible with X Brace Diagonals
SHS Polished Stainless Steel
SHS1D Stainless w/ Single Diagonal
SHS2D Stainless w/ Double Diagonal
H Stainless Harness Bar

Stitched Covers w/ our Custom Formed High Density Padding - Cover Shipping $25.00 Contiguous U.S
Item/Number Description
V Black Vinyl
L Black Leather
Hard Dog Custom Formed High Density Padding - Pad Shipping $25.00 Contiguous U.S
Item/Number Description
SPAD Formed Pad Only

Polished Stainless Hard Bar Sport
No Diagonal

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Black Powdercoat Hard Bar Sport with Single Diagonal
Single Diagonal

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Black Powdercoat Hard Bar Sport with Single Diagonal
Double Diagonal w/ Harness Bar

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WARNING: This article is sold without warranty, expressed or implied. No warranty is made to this product's ability to protect the user from any injury or death. The user assumes that risk.

Updated May 1, 2021